Open Watcom 1.7 Release Candidate 2 has recently been released. Open Watcom is a popular open-source C/C++/Fortran compiler.

You can get the RC2 at the following FTP server:
http://ftp.openwatcom.org/ftp/devel
or
ftp://ftp.openwatcom.org/devel

The last stable version (1.6) can be found here:
http://www.openwatcom.org/index.php/Download

Open Watcom home page:
http://www.openwatcom.org/